7.40 (p430) a) 4 6 8 9 10 Car 1 2 3 Diff st. dev.: Mean: b) H0: t-test: conclusion: На: p-value: c)
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7.40 (p430) a) 4 6 8 9 10 Car 1 2 3 Diff st. dev.: Mean: b) H0: t-test: conclusion: На: p-value: c)
In order to conduct a hypothesis test for the population proportion, you sample 450 observations that...
In order to conduct a hypothesis test for the population
proportion, you sample 450 observations that result in 189
successes. (You may find it useful to reference the
appropriate table: z table or t
table)
H0: p ≥ 0.45;
HA: p < 0.45.
a-1. Calculate the value of the test statistic.
(Negative value should be indicated by a minus sign. Round
intermediate calculations to at least 4 decimal places and final
answer to 2 decimal places.)
TEST STATISTIC =
a-2....
Consider the following hypotheses: H0: μ ≤ 270 HA: μ > 270 Find the p-value for this test based on the following samp...
Consider the following hypotheses:
H0: μ ≤ 270
HA: μ > 270
Find the p-value for this test based on the following
sample information. (You may find it useful to reference
the appropriate table: z table or t
table)
a. x¯x¯ = 277; s = 23; n =
18
0.025
p-value < 0.05
0.01
p-value < 0.025
p-value 0.10
0.05
p-value < 0.10
p-value < 0.01
b. x¯x¯ = 277; s = 23; n =
36
p-value
0.10
0.025
p-value <...
Test Statistic= 3,4, or 8 P-Value= 0.05,0.384, or 0.726 Conclusion= The distrabutions are different, The distrabutions...
Test Statistic= 3,4, or 8
P-Value= 0.05,0.384, or 0.726
Conclusion= The distrabutions are different, The distrabutions
are identical, or Reject H0
A car dealer was interested in comparing two brands of tires to see if they yielded different wear length (in thousands of miles). The dealer selected eight cars at random and used each of the brands of tires on each car. The wear length was recorded as follows: CAR BRANDA BRANDB 1 45 47 2 43 40 3 54...
For the given data Question in Red ed2 mean = 96.42, st dev = 8.2586, n...
For the given data Question in Red ed2 mean = 96.42, st dev = 8.2586, n = 10 Assuming alpha = 0.05 (1) Null and Alternative Hypotheses The following null and alternative hypotheses need to be tested: Ho: 4 = 100 Ha: 4 < 100 This corresponds to a left-tailed test, for which a t-test for one mean, with unknown population standard deviation will be used. (2) Rejection Region Based on the information provided the significance level is a =...
For the given data Question in Red ed2 mean = 96.42, st dev = 8.2586, n...
For the given data Question in Red ed2 mean = 96.42, st dev = 8.2586, n = 10 Assuming alpha = 0.05 (1) Null and Alternative Hypotheses The following null and alternative hypotheses need to be tested: Ho: 4 = 100 Ha: 4 < 100 This corresponds to a left-tailed test, for which a t-test for one mean, with unknown population standard deviation will be used. (2) Rejection Region Based on the information provided the significance level is a =...
Consider the following competing hypotheses: H0: ρxy ≥ 0 HA: ρxy < 0 The sample consists of 30 observations and the sample correlation coefficient is –0.46. [You may find it useful to reference t...
Consider the following competing hypotheses:
H0: ρxy ≥ 0
HA: ρxy < 0
The sample consists of 30 observations and the sample correlation
coefficient is –0.46. [You may find it useful to reference
the t table.]
a-1. Calculate the value of the test statistic.
(Round intermediate calculations to at least 4 decimal
places and final answer to 3 decimal places.)
a-2. Find the p-value.
p-value < 0.01
p-value
0.10
0.05
p-value < 0.10
0.025
p-value < 0.05
0.01
p-value <...
Consider the following hypothesis test. H0:mean 1 -mean 2 ≤ 0 Ha: mean1 -mean 2 >...
Consider the following hypothesis test. H0:mean 1 -mean 2 ≤ 0 Ha: mean1 -mean 2 > 0 The following results are for two independent samples taken from the two populations. Sample 1 and sample 2: n 1 = 40 n 2 = 60 x 1 = 25.7 x 2 = 22.6 σ 1 = 5.6 σ 2 = 6 a. What is the value of the test statistic (round to 2 decimals)? b. What is the p-value (round to 4...
Let A, B be events such that P(A) = 1/3 , P(B) = 1/4 , and...
Let A, B be events such that P(A) = 1/3 , P(B) = 1/4 , and P(AB) = 1/6. Find the following and write in words what events a)-d). Example: AB' means that either A occurs or B does not occur. HINT: draw a diagram. a) P(A' B') b) P(A' B) c) P(A' u B) d) P(A' B') We were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to...
8.2.1 Distinct Real Eigenvalues In Problems 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,...
8.2.1 Distinct Real Eigenvalues In Problems 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 find the general solution of the given system. We were unable to transcribe this image
8 a) ttest hwage 30 One-sample t test Variable l Obs Mean Std. Err. Std. Dev....
8 a) ttest hwage 30 One-sample t test Variable l Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] 175 33.52778 1.73398 22.9384 30.10544 36.95012 mean mean(hwage) t 2.0345 Ho: mean-30 degrees of freedom174 Ha: mean<30 Ha: mean !-30 Ha: mean>30 Pr(T <t) 0.9783 Pr(ITI Itl) 0.0434 Pr(T>t) 0.0217 Mean Std. Err. (95% Conf. Interval] hwage 33.52778 1.73398 38.18544 36.95812 . summarize hwage Variable I Obs Mean Std. Dev Min Max hwage 175 33.52778 22.9384 2.051282 149.1966 . return list...
In order to conduct a hypothesis test for the population
proportion, you sample 450 observations that result in 189
successes. (You may find it useful to reference the
appropriate table: z table or t
table)
H0: p ≥ 0.45;
HA: p < 0.45.
a-1. Calculate the value of the test statistic.
(Negative value should be indicated by a minus sign. Round
intermediate calculations to at least 4 decimal places and final
answer to 2 decimal places.)
TEST STATISTIC =
a-2....
Consider the following hypotheses:
H0: μ ≤ 270
HA: μ > 270
Find the p-value for this test based on the following
sample information. (You may find it useful to reference
the appropriate table: z table or t
table)
a. x¯x¯ = 277; s = 23; n =
18
0.025
p-value < 0.05
0.01
p-value < 0.025
p-value 0.10
0.05
p-value < 0.10
p-value < 0.01
b. x¯x¯ = 277; s = 23; n =
36
p-value
0.10
0.025
p-value <...
Test Statistic= 3,4, or 8
P-Value= 0.05,0.384, or 0.726
Conclusion= The distrabutions are different, The distrabutions
are identical, or Reject H0
A car dealer was interested in comparing two brands of tires to see if they yielded different wear length (in thousands of miles). The dealer selected eight cars at random and used each of the brands of tires on each car. The wear length was recorded as follows: CAR BRANDA BRANDB 1 45 47 2 43 40 3 54...
For the given data Question in Red ed2 mean = 96.42, st dev = 8.2586, n = 10 Assuming alpha = 0.05 (1) Null and Alternative Hypotheses The following null and alternative hypotheses need to be tested: Ho: 4 = 100 Ha: 4 < 100 This corresponds to a left-tailed test, for which a t-test for one mean, with unknown population standard deviation will be used. (2) Rejection Region Based on the information provided the significance level is a =...
For the given data Question in Red ed2 mean = 96.42, st dev = 8.2586, n = 10 Assuming alpha = 0.05 (1) Null and Alternative Hypotheses The following null and alternative hypotheses need to be tested: Ho: 4 = 100 Ha: 4 < 100 This corresponds to a left-tailed test, for which a t-test for one mean, with unknown population standard deviation will be used. (2) Rejection Region Based on the information provided the significance level is a =...
Consider the following competing hypotheses:
H0: ρxy ≥ 0
HA: ρxy < 0
The sample consists of 30 observations and the sample correlation
coefficient is –0.46. [You may find it useful to reference
the t table.]
a-1. Calculate the value of the test statistic.
(Round intermediate calculations to at least 4 decimal
places and final answer to 3 decimal places.)
a-2. Find the p-value.
p-value < 0.01
p-value
0.10
0.05
p-value < 0.10
0.025
p-value < 0.05
0.01
p-value <...
8.2.1 Distinct Real Eigenvalues In Problems 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 find the general solution of the given system. We were unable to transcribe this image
8 a) ttest hwage 30 One-sample t test Variable l Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] 175 33.52778 1.73398 22.9384 30.10544 36.95012 mean mean(hwage) t 2.0345 Ho: mean-30 degrees of freedom174 Ha: mean<30 Ha: mean !-30 Ha: mean>30 Pr(T <t) 0.9783 Pr(ITI Itl) 0.0434 Pr(T>t) 0.0217 Mean Std. Err. (95% Conf. Interval] hwage 33.52778 1.73398 38.18544 36.95812 . summarize hwage Variable I Obs Mean Std. Dev Min Max hwage 175 33.52778 22.9384 2.051282 149.1966 . return list...
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